Cannot Find Module “next/jest”
When encountering the error message “Cannot find module ‘next/jest'” in a Next.js project, it usually means that the required module or package is missing or not properly installed.
To resolve this issue, you can follow these steps:
- Ensure that you have installed the necessary packages by running the following command in your project’s root directory:
- Check your project’s
package.json
file to ensure that the required dependencies are correctly listed. Make sure that there is an entry for"next"
in the"dependencies"
section: - If you are using TypeScript, check your
tsconfig.json
file to ensure that the necessary types are included. Make sure that the following entries are present: - If the error still persists, it might be caused by an inconsistency in your project’s cache. Try clearing the cache by running:
- If none of the above steps work, you can try removing the
node_modules
directory and reinstalling all packages by running:
npm install next react react-dom
This command installs Next.js along with its dependencies, including React and ReactDOM.
{
"dependencies": {
"next": "^10.0.0",
"react": "^17.0.0",
"react-dom": "^17.0.0"
}
}
If any of these dependencies are missing or have incorrect versions, you can manually add or update them.
{
"compilerOptions": {
"types": ["next/types/global", "jest"]
}
}
These entries ensure that Next.js and Jest types are available for your TypeScript project.
npm run clear-cache
This command will clear the npm cache and may resolve the issue.
rm -rf node_modules
npm install
This clears the existing packages and reinstalls them from scratch.
By following these steps, you should be able to resolve the “Cannot find module ‘next/jest'” error and have your Next.js project running smoothly.